Trombone Glissando | MuseScore

I use Musescore Portable on a USB stick drive, which is basically Musescore 2, but portable. I’ve never looked at any newer versions of the program because they’re not available as portable versions, so maybe this is already a feature in them, but I don’t know.

During playback, when I have a glissando on a trombone part, it plays each individual note between the start and end of the glissando, but I (obviously) want it to be a continuous smear, like how a trombone would sound doing a glissando in real life.